Question

Find the circumference. Use 3.14 for the value of pi. Round your answer to the nearest tenth.

diameter = 8 km​

Answer 1

25.1

Explanation:

The formula to find the circumfrence of a circle is C=2πr. Where r represents the radius. We have to find the radius first. The diameter is 8, and we know the diameter is 2 times the radius so our radius is 4. If we plug in the numbers we have, we get the equation C=2*(3.14)*4. Solve for C and you end up with 25.12, rounded to the nearest tenth and you have 25.1.

Answer 2

C=2pi(r)
Radius= 1/2(diameter)
Radius = 4km

C= 2(3.14)(4km)

C=25.12km